The Dwyer V4-2-U vane operated flow switch is a robust and dependable solution for safeguarding equipment and pipelines from flow reduction or loss. Its proven design, used in countless installations globally, offers a unique combination of durability, versatility, and ease of use.

Unparalleled Performance and Design
The Series V4 Flotect® Vane Operated Flow Switch is engineered to deliver exceptional performance. Its magnetically actuated switching design ensures superior reliability. The free-swinging vane inside the metal switch body interacts with a magnet, triggering a snap switch via a simple lever arm. This mechanism eliminates the need for bellows, springs, or seals, which are prone to failure, thus extending the product’s lifespan.

Durability and Safety Features
Designed to meet NEMA 4 standards, the V4-2-U is both weatherproof and explosion-proof. It handles high-pressure environments with ease, boasting a rating of 1000 psig (69 bar) for the brass body and 2000 psig (138 bar) for the stainless steel variant. Its leak-proof body, machined from bar stock, ensures that it meets the most demanding applications without compromising on durability.
Key Features:
- Magnetic Magic: The V4-2-U boasts a unique magnetically actuated switching design. A free-swinging vane attracts a magnet within the solid metal switch body, triggering a snap switch. No bellows, springs, or seals to worry about—just reliable performance.
- Built to Last: The leak-proof body is precision-machined from bar stock, ensuring durability. Plus, the electrical assembly can be easily replaced without disrupting your entire process. Time is money, after all!
- Easy Installation: Fitting the V4-2-U into your pipeline is a breeze. Threadolet, tee, or flange—it’s your call. The brass body handles up to 1000 psig (69 bar), while the stainless steel (SS) body goes up to 2000 psig (138 bar).
Applications Galore
- Flow Protection: Worried about low or no flow? The V4-2-U’s got you covered.
- Sequential Pump Control: It orchestrates pump operations seamlessly.
- Auxiliary Pumps and Engines: Automatically kickstarts those backups.
- Coolant Flow Interruption: Say goodbye to overheating mishaps.
- Burner Safety: When air flow through the heating coil falters, the V4-2-U steps in.
- Dampers on Demand: Adjusts dampers based on flow conditions.
Customization Options
Choose your vane wisely:
- Model V4: Custom-calibrated for your specific application.
- Model V4-2-U: Field-adjustable multilayer vane. Versatility at its finest.
Bonus: Free Shipping!
Order the DWYER V4-2-U now and enjoy free shipping on orders over $150. Your pipeline deserves the best—why settle for less?
Pricing and Discounts
The Dwyer V4-2-U is competitively priced at $707.20 for each unit. Volume discounts are available as follows: Please Note: These prices are subject to change, see website for all current pricing.
- 1 unit: $707.20 each
- 5+ units: $671.84 each
- 10+ units: $636.48 each
Applications:
- Protects pumps, motors, and equipment against low or no flow
- Controls sequential operation of pumps
- Automatically starts auxiliary pumps and engines
- Controls dampers according to flow
Benefits and Features:
- Superior performance with a unique magnetically actuated switching design
- Durable leak-proof body machined from bar stock
- Quick installation with fitting that installs directly into the pipeline
- High pressure rating of 1000 psig for the brass body
Special Promotion:
Get free shipping on orders over $150. Don’t miss out on this incredible offer!
Why Choose Newark:
- Trusted supplier of high-quality industrial products
- Wide range of products to meet your specific needs
- Excellent customer service and support
The Dwyer V4-2-U vane operated flow switch is an exemplary choice for anyone seeking reliable, durable, and versatile flow protection solutions. Its robust design, ease of installation, and maintenance, coupled with its ability to meet demanding applications, make it a standout product in its category. Get the DWYER V4-2-U at Newark today and take advantage of free shipping on orders over $150 at Newark!